Pass JWT token to spring cloud config server

[satya108agarwal]

Describe the bug
I'm utilizing Spring Cloud Config Client version 4.1. Following the guidelines provided in the documentation found at https://docs.spring.io/spring-cloud-config/docs/current/reference/html/#_providing_a_custom_resttemplate_using_config_data. My objective is to transmit a JWT token to the config server for token authentication prior to delivering configurations to the client. However, the CustomBootstrapRegistryInitializer remains untriggered. Below is a sample implementation:

Sample
https://github.com/satya108agarwal/config-client/blob/master/src/main/java/config/CustomBootstrapRegistryInitializer.java

[satya108agarwal]

cc @dashaun